The tag has no wiki summary.

learn more… | top users | synonyms

0
votes
0answers
7 views

Is HLB only defined for nonionic surfactants?

Most textbooks only talk about the hydrophilic/lipophilic balance (HLB) for nonionic surfactants. I'm wondering if the same concept is well defined for other types of surfactants such as anionic and ...
6
votes
1answer
321 views

Soap and rain water, why does it not rinse off?

I am in Papua New Guinea at the moment, where rain water harvesting is the most common way of getting water. When washing hands, the soap feels hard to rinse off, and my skin feels "greasy". I read ...
2
votes
1answer
110 views

What is the difference between the reactivity of Lead subacetate and Lead II acetate undergoing a hydrothermal process?

I am attempting to adapt a hydrothermal method for synthesizing $\ce{PbS}$ nanocrystals to my school that contains a mixture of cationic and anionic surfactants sodium dodecyl sulfate (.05 mmol, SDS) ...
2
votes
1answer
29 views

What are the differences between the various household surfactants?

In a typical household, the following surfactants are found, among others: Soap / handwash Shower gel Shampoo Dishwashing agent Washing powder / liquid From my understanding, the role of all these ...
1
vote
2answers
659 views

What are the main differences of CTAB and DTAB surfactants? And what are practical applications of them?

Just doing a little bit of research of both surfactants but I can't seem to find too much online about them. Hopefully you guys can help out!
2
votes
1answer
74 views

Dyes that can stain oil and water

Is there such a thing as a dye that can stain both oil and water? In other words, does anyone know of an amphiphilic dye? Maybe a surfactant that is also a pretty shade of blue? Or maybe turn one ...
2
votes
1answer
338 views

Thermodynamics (Entropy change) of micellization?

I was reviewing the thermodynamics of micelle formation from the Wikipedia page and this book. I understood most of the arguments but micellization is supposed to be an entropy driven process with a ...
0
votes
0answers
297 views

Perfluorobutanesulfonic acid (PFBS) Safety and Toxicity

I was wondering if anyone had any experience with PFBS or PFOS (perflurooctane sulfonic acid)? I am thinking about trying to purchase some of these fluorosurfactants in bulk in order to (hopefully) ...
1
vote
0answers
85 views

Colors of soap, Dodecanol, and chlorosulfonic acid

I was wondering if anyone had any insight as to why the reaction of chlorosulfonic acid (colorless) and 1-dodecanol (colorless) produces a deep dark red colored solution? The reaction should give ...
3
votes
1answer
296 views

What is the substance in the new water cooler filter that give bubbles and taste a bit like soap

Recently the water cooler was replace with a new filter. However, when I refill my water kettle with the water from the water cooler, there are many bubbles and the taste was a bit like soap. What ...
3
votes
1answer
294 views

Removing wine stains from a decanter

I have a decanter which I use fairly often to pour out wines. I typically rinse it with hot water after the last wine has come out, but I cannot prevent it from forming 'residual' wine stains over ...
6
votes
1answer
93 views

Stripeless cleaning of windows

Cross post: http://physics.stackexchange.com/q/56800/7433 Last week I was discussing with a friend how we thought the stripeless cleaning of windows is achieved when using a cleaner like Windex ...
2
votes
1answer
104 views

Impact of detergent on internal living tissue?

There was some spirited debate between the members of my chemistry lab today about the theoretical consequences of ingesting a large amount of the detergent Triton X-100 at a 100% concentration. The ...
8
votes
1answer
501 views

What is the opposite of a surfactant?

Surfactants decrease surface tension between two fluids. What do you call a substance that increases the surface tension between two fluids? How is this effect acheived?
3
votes
1answer
53 views

How do surfactants spread in the case of multiple materials?

For example, consider a pot of water with a drop of oil floating on it, with surfactants present in the water. Will the surfactants in the water spread evenly across all three interfaces ...
1
vote
3answers
6k views

Reaction of soap with water

I've seen it many times... Why does soap become foam-like when it reacts with water (moisture) or when we touch it with wet hands.. What compound actually causes this physical change? And why does ...